What should I title this novel that I am working on?

I am working on this novel. It is about a normal girl who meets this guy who is a Colban, which is an unknown group of people that creep during the night, staying in dark, abandoned houses. Their skin is coated with clear steel, which would melt if they stayed in the sunlight for too long. They hunt humans since their bodies can't process such little meet, or else they would starve. They have to eat at least once every two weeks, and all of the Colban's around the world meet every month in a special, dark place (I haven't figured it out just yet,) to share scraps of meals. Garrett, the male protagonist, is sick of living inside, not being able to live a normal life. He hates seeing people content with their lives since he is not. He wants to be free and be able to go outside for longer than ten minutes. Conflict arises when the King Bart, the King of the Colban's, tells Garrett that he and his biological Colban daughter, Debra, have to mate. (King Bart picks out the most powerful Colban's with the strongest traits so they can eventually produce a child who will help them eventually conquer the world.) Garrett is angry by this, since he is only seventeen years old, as well as Debra. He goes to the gas station market, where Polly, the main girl protagonist, works, and buys some liquor to celebrate with the Colban's, as they are having a party. He is wearing a suspicious black outfit, with a hoodie and sungles. Polly is taken back by this, but she gets over it. Anyway, she meets them and it's a whole big conflict as she tries to solve their problem (being a genius,) and to cure their Colbanisim. Can she do it before Garrett and Debra have to eventually and unfortunately mate? Will Polly and Garrett form a friendship, and even fall in love later on? Is the plot ok? Also, what should I title it? What should I title this novel that I am working on?